Xin Xin

Basic Profile

Xin Xin (Chinese: 欣欣, “Hope”, studbook number 360) is a female giant panda born on July 1, 1990 at Chapultepec Zoo (Centro de Conservación de la Vida Silvestre de Chapultepec) in Mexico City, Mexico. She was conceived naturally.

Her mother is Tohui (朵蔚, studbook 251, July 21, 1981 – November 16, 1993), the first giant panda ever born in captivity outside China to survive to adulthood, a beloved Mexican cultural icon and subject of the hit song “Osito Panda.” Her father is Chia Chia (佳佳, studbook 213), a male giant panda from London Zoo sent to Mexico in the late 1980s for international breeding. Xin Xin is the granddaughter of Ying Ying (迎迎) and Pe Pe (贝贝), the pair of giant pandas gifted by China to Mexico on September 10, 1975 — the first pandas to live in Latin America.

Unique Legal Status — The Only Panda Not Owned by China

Xin Xin holds an extraordinary legal distinction: she is the only giant panda in the world whose ownership is permanently vested in a country other than China. She is legally the property of the Mexico City government / Chapultepec Zoo. China has no claim over her and has never requested her return.

Legal Origin: The 1975 Gift Agreement

In 1975, following the establishment of China-Mexico diplomatic relations, China donated (无偿赠送) two giant pandas — Ying Ying (迎迎) and Pe Pe (贝贝) — to Mexico as national gifts. The diplomatic agreement specified:

• The pandas themselves, and all their descendants born overseas, are permanently owned by Mexico
• China retains no ownership, control, or repatriation rights
• The agreement is not subject to China’s later policy changes

This 1975 agreement represents a policy watershed: it belongs to the era when China gifted pandas as diplomatic presents, a practice that ended completely by 1984.

The 1984 Policy Shift

In 1984, China fundamentally changed its panda policy:

• All gifts permanently stopped. From 1984 onward, China would no longer give pandas to any country.
• All overseas pandas transitioned to fixed-term scientific research loans (十年科研租借), typically 10 years.
• Under the loan system: the pandas and any cubs born abroad remain Chinese property; cubs must be returned to China at age 4; adult pandas must be returned when the loan expires.

Although Xin Xin was born in 1990 — after the 1984 shift — she is a descendant of the 1975 gift pandas and therefore falls under the old gifting agreement. The 1984 policy applies only to pandas obtained after that date. Xin Xin is a historical exception.

Matrilineal Ownership

Xin Xin’s father is Chia Chia (佳佳, studbook 213), a male panda loaned from London Zoo. Her mother is Tohui (朵蔚, studbook 251), a Mexican-owned descendant of the 1975 gift pair. Under the original gifting agreement, ownership follows the maternal line: the father’s loan status does not affect the offspring’s ownership. Since Tohui was Mexico’s property, Xin Xin is also Mexico’s property — regardless of her father’s origin.

Bilateral Consensus

Both Mexico and China formally recognize Xin Xin’s unique status:

• Mexico’s position: Chapultepec Zoo has repeatedly confirmed Xin Xin is Mexican national property. She will remain in Mexico for life. The zoo provides all her care independently.
• China’s position: Xinhua News Agency and the Chinese Embassy in Mexico acknowledge the 1975 gifting agreement’s validity. They describe Xin Xin as a “symbol of China-Mexico friendship” and have never requested her return. Chinese technical assistance on geriatric care is offered as voluntary cooperation, not an assertion of ownership.

Common Misconceptions

1. “All pandas belong to China.” → Only pandas obtained under the 1984+ loan system are Chinese property. The 1970s gift batch and their descendants are legal exceptions.
2. “Xin Xin’s father was a UK loan panda, so her ownership is disputed.” → The gifting agreement determines ownership by the maternal line. The father’s loan status does not change the offspring’s legal status.
3. “China could reclaim Xin Xin in the future.” → The 1975 agreement has binding diplomatic force. No clause supports a Chinese claim. Both countries have consistently upheld this understanding.

Practical Implications

• Care: Mexico independently funds and manages all of Xin Xin’s care, including her enclosure, medical treatment, and daily feeding. Chinese engagement is limited to voluntary technical exchange on senior panda care.
• Breeding: Xin Xin is geriatric and has no breeding capacity. If Mexico wishes to obtain new pandas, it must negotiate a standard 10-year paid loan — the gifting era cannot be invoked again.
• Legal status: Xin Xin enjoys protected animal status in Mexico and is not managed under China’s global breeding framework.
• Regional significance: She is the only giant panda in Latin America. When she passes, pandas will disappear from the continent unless Mexico negotiates a new loan.

Family & Lineage

Xin Xin is the third generation of Mexico’s celebrated panda dynasty, which produced eight cubs at Chapultepec Zoo, five of whom survived to adulthood — making it one of the most successful panda breeding programs outside China.

Generation	Panda	Studbook	Years	Relation
1st	Ying Ying (迎迎)	165	1975–1989	Grandmother (gifted from China)
1st	Pe Pe (贝贝)	—	1975–1988	Grandfather (gifted from China)
2nd	Tohui (朵蔚)	251	1981–1993	Mother (first panda born outside China to survive)
2nd	Liang Liang (亮亮)	—	1983–?	Aunt
2nd	Xiu Hua (秀华)	291	1985–?	Aunt
3rd	Xin Xin (欣欣)	360	1990–present	Last surviving descendant
3rd	Shuang Shuang (双双)	332	1987–2022	Sister (deceased)

Xin Xin’s sister Shuang Shuang (双双, studbook 332) lived to 35 and died on July 11, 2022. With her passing, Xin Xin became the sole surviving panda in Latin America.

Life at Chapultepec

Xin Xin has lived her entire life at Chapultepec Zoo in Mexico City’s Bosque de Chapultepec. Her enclosure sits at approximately 2,300 meters (7,500 ft) elevation, similar to the pandas’ native habitat in Sichuan, China — a factor attributed by researchers to Mexico’s remarkable success in panda breeding.

Her keeper Elías García has cared for her since 2010. She is known for her strong, dominant personality and her love of apples. She consumes approximately 10 kilograms of bamboo daily along with apples, rice, carrots, and a Mexican specialty — cactus leaves (仙人掌叶).

Through operant conditioning, Xin Xin voluntarily participates in medical checkups, allowing blood draws and physical exams without anesthesia — a testament to the strong bond with her keepers, known affectionately as “los panderos.”

36th Birthday Celebration (2026)

On July 1, 2026, Xin Xin celebrated her 36th birthday at Chapultepec Zoo, an event that drew thousands of visitors from across Mexico and Latin America. The celebration was co-organized by the Mexico City Environment Department, Chapultepec Zoo, the Mexican Chinese Cultural Center, and the Mexican Chinese Cultural Exchange Association.

Activities included:

• A themed painting exhibition titled “Xin Xin Inspired Me”
• Traditional dragon and lion dance performances
• Birthday message wall for visitors
• A special birthday cake made from her favorite treats

In her keynote speech, Adriana Fernández, General Director of Chapultepec Zoo, described having Xin Xin as “Mexico’s pride” and noted that her remarkable 36-year lifespan “fully demonstrates the importance of scientific breeding and professional care.”

Ni Cheng, Counselor of the Chinese Embassy in Mexico, remarked that Xin Xin “has witnessed the development of China-Mexico friendship and is a symbol of the friendship between the two peoples.”

Xin Xin is now in the final stage of her life. Mexico City’s Environment Department has stated that she is in an advanced geriatric phase, and the zoo is preparing accordingly. Her movement has slowed noticeably, and she often stays in her indoor enclosure. Despite this, the zoo provides meticulous daily care, selecting approximately 10 kilograms of fresh bamboo each day, supplemented by apples, rice, carrots, and cactus leaves.

Previous Milestones

• 35th Birthday (2025): A week-long celebration with 2.4 million commemorative lottery tickets issued by the Mexican government, with a top prize of 17 million pesos. Nearly 40,000 people attended from across the country.
• 34th Birthday (2024): Celebrated with a piñata filled with apples and carrots, drawing widespread media coverage.
• 2017: Joint birthday celebration with sister Shuang Shuang, featuring traditional Chinese performances organized by the Chinese Embassy.

Legacy

Xin Xin represents the final chapter of Mexico’s panda dynasty that began in 1975. She is one of the oldest living giant pandas under professional care worldwide, having far exceeded the species’ typical life expectancy of 20–25 years. At 36, her age is roughly equivalent to 110 human years.

As the last surviving descendant of the 1975 gifting era, she will likely be the final panda owned entirely by a country other than China — a living bridge between the era of panda gifts and the modern era of conservation loans.

When Xin Xin passes, it will mark the end of pandas in Latin America unless Mexico negotiates a new loan agreement with China. Chapultepec Zoo has preserved cryogenically frozen genetic material from Xin Xin’s relatives, ensuring that Mexico’s contribution to giant panda conservation can continue.

The Bank of Mexico minted commemorative coins for her mother Tohui’s fifth birthday, and the Mexican government issued 2.4 million lottery tickets for Xin Xin’s 35th birthday — reflecting the extraordinary place these pandas hold in Mexican culture and national identity.